Police say they've identified three men they believe were involved in a serious assault at Auckland City Hospital last Friday.
Sergeant Nina Pedersen said the men are Anthony Chown, 27, Murray Matthews, 28 and Mua Fa'Anunu, 30.
They had not yet been caught but arrest warrants for the trio had been prepared.
All three had links to the Hell's Angels, Ms Pedersen said.
Two people were treated for injuries after being assaulted at the hospital.